迷宮實現演算法：

package algrithm;

import java.util.Scanner;

public class maze {
	public static void main(String[] args) 
	{		
	    int a[][]={{1,1,1,1,1,1,1,1,1,1,1,1},
			       {1,0,0,0,0,0,0,0,0,0,0,1},
			       {1,1,0,1,1,1,1,1,1,1,1,1},
			       {1,0,0,0,0,0,0,0,0,1,0,1},
			       {1,1,0,1,0,0,1,1,0,0,0,1},
			       {1,1,1,1,1,1,1,1,1,0,1,1},
			       {1,0,0,0,0,0,0,0,1,0,0,1},
			       {1,1,1,1,1,1,1,1,0,0,1,1},
			       {1,1,0,0,1,0,1,0,0,1,0,1},
			       {1,0,1,0,0,1,0,1,0,1,0,1},
			       {1,0,0,1,0,0,1,1,0,0,0,1},
			       {1,1,1,1,1,1,1,1,1,1,1,1}};	
		System.out.println("the maze is:");
		print(a);
		Scanner sc=new Scanner(System.in);
		System.out.println("please input enter coordinate:");
		int xstart=sc.nextInt();
		int ystart=sc.nextInt();
		System.out.println("please input exit coordinate:");
		int xend=sc.nextInt();
		int yend=sc.nextInt();
		System.out.println("縱向為x軸，橫向為y軸!");
		path(a,xstart,ystart,xend,yend);
	}
	
	public static void path(int a[][],int xstart,int ystart,int xend,int yend) 
	{
		cStackList cs=new cStackList();
		cs.push(xstart, ystart);//入口座標入棧
		int x=xstart;
		int y=ystart;
		a[x][y]=2;  //將已走過的座標置為2
		while(!cs.isEmpty())
		{
			cStack temp=cs.peek();
			x=temp.xData;
			y=temp.yData;
			if(temp.xData==xend&&temp.yData==yend)//如果找到路徑
			{
				System.out.println("find the path!the coordinate is:");
				break;
			}			
			if(a[x][y-1]==0)//向左移動
			{
				cs.push(x,y-1);
				a[x][y-1]=2; //將已走過的座標置為2
				x=x;
				y=y-1;
			}
			else
			{
				if(a[x][y+1]==0)//向右移動
				{
					cs.push(x, y+1);
					a[x][y+1]=2;
					x=x;
					y=y+1;
				}
				else
					if(a[x-1][y]==0)//向上移動
					{
						cs.push(x-1, y);
						a[x-1][y]=2;
						x=x-1;
						y=y;
					}
					else
						if(a[x+1][y]==0)//向下移動
						{
							cs.push(x+1, y);
							a[x+1][y]=2;
							x=x+1;
							y=y;
						}
						else
						{
							cs.pop();//如果4個方向都走不通，則往後退一步
						}
			}					
		}
		if(cs.isEmpty())//如果找不到路徑
		{
			System.out.println("no way!");
		}
		cStackList cc=new cStackList();
		while(!cs.isEmpty())
		{
			cStack cst=cs.pop();
			cc.push(cst.xData, cst.yData);
		}
		cc.displayList();//輸出路徑
		
	}
	
	public static void print(int a[][])
	{		
		for(int i=0;i<a.length;i++)
		{
			for(int j=0;j<a[0].length;j++)
			{
				System.out.print(a[i][j]);
			}
			System.out.println();
		}
	}
}

class cStack
{
	public int xData;
	public int yData;
	public cStack next;
	
	public cStack(int x,int y)
	{
		xData = x;
		yData = y;
	}
	
	public void display()
	{
		System.out.print("("+xData+","+yData+")"+"->");
	}
}

class cStackList
{
	private cStack top;
	
	public cStackList()
	{
		top=null;
	}
	
	public boolean isEmpty()
	{
		return (top==null);
	}
	
	public cStack peek()
	{
		return top;
	}
	
	public void push(int x,int y)
	{
		cStack newcStack=new cStack(x,y);
		newcStack.next=top;
		top=newcStack;
	}
	
	public cStack pop()
	{
		cStack temp=top;
		top=top.next;
		return temp;
	}
	
	public void displayList()
	{
		cStack current=top;
		while(current!=null)
		{
			current.display();			
			current=current.next;
		}	
	}		
}